The document discusses the potential impacts of electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) on urban carbon emissions. It notes that UK cities are currently not ready for EVs due to a lack of on-street charging infrastructure compared to other countries. The author argues that utilities and automakers need to cooperate to build charging networks and integrate EVs with smart grids, and that self-driving electric public transport vehicles could reduce emissions in cities but may be too radical for car makers.